Crystallization process for ceftazidime derivative

Details Crystallization process for ceftazidime derivative Crystallization process for ceftazidime derivative

1985-11-22

1987-04-21

Rizzo, Nicholas S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D49944, A61K 31545

Patent

active

046598138

ABSTRACT:
Ceftazidime pentahydrate is obtained in purified crystalline form in a process comprising acidification of an aqueous solution of ceftazidime to about the optimum pH for nucleation of between about 4.0 and about 4.7 and maintenance at the optimum pH during crystallization. The crystalline product obtained exhibits enhanced stability toward polymer formation when stressed.

REFERENCES:
patent: 4258041 (1981-03-01), O'Callaghan et al.
patent: 4329453 (1982-05-01), Brodie et al.

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